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Pressure Regulation that's Built in (So It's Always There)

Sprinkler with No Regulator
No Regulator
Sprinkler with Regulator
With Regulator

For long pipe runs with wide variations in available pressure, large elevation changes that make design difficult, or high and variable pressure situations that create nozzle performance problems, the Institutional Spray provides a comprehensive solution. Built-in pressure regulation to a true 30 psi. You’ll get controlled, reliable pressure to Hunter’s wide array of available nozzles, as well as the elimination of misting, fogging or unwanted variation. The pressure regulator is also dirt tolerant, handles extreme operating pressures up to 100 psi and will control flow rates by 70% if the nozzle is damaged or removed. Best of all, unlike pressure compensating discs, this regulator is built into the sprinkler, so it’s ready from the get-go to handle the extremes your site dishes out.

Institutional Spray Models

INST-04 – 4" Pop-up (10 cm)
INST-06 – 6" Pop-up (15 cm)
INST-12 – 12" Pop-up (30 cm)

Dimensions

  • Overall height:
    INST-04 – 5 7/8" (15.5 cm)
    INST-06 – 8 3/4" (22.5 cm)
    INST-12 – 16 1/8" (41 cm)
  • 1/2" female inlet NPT
  • Exposed diameter: 2 1/4" (5.7 cm)

Operating Specifications

  • Pressure range: 15 to 70 psi (1.0 to 4.8 bars; 103 to 482 kPa)
  • Flow-by: 0 at 10 psi (.07 bars; 68 kPa) or greater; .1 gpm (0,02 m3/hr; 0.4 l/min) otherwise
  • Precipitation rates: approximately 1.5" (38 mm) per hour

Options Available

  • Optional factory-installed drain check valve for up to 10' (3 m) elevation change; “Check Valve” stamped on cap for easy identification
  • Optional field-installed reclaimed water identification cap (Part number 469800)

PRODUCT EXPLANATION

EXAMPLE: INST - 06 - CV - 15H
MODEL
INST = Institutional
Spray
POP-UP HEIGHT
04 = 4' Pop-up
06 = 6' Pop-up
12 = 12' Pop-up
OPTIONS
CV =
Factory Installed Drain Check Valve
NOZZLE SERIES
15 Series
PATTERN
Half Circle
 
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Copyright © 2000 Underhill International Corporation
Last modified: December 06, 2007